US4052171A
Expired / Lapsed
US
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Fuel compositions and additive mixtures containing methanetricarboxylates for reducing exhaust gas catalyst plugging
Assignee: Ethyl Corp
•
Filing: 1975-12-22
•
Granted: 1977-10-04
•
Expires: 1995-12-22
Abstract
Abstract Gasoline compositions and additive mixtures of esters of 1,1,2-ethane tricarboxylic acid, in amount sufficient to alleviate the plugging of certain catalysts being used in an engine exhaust system to lower the amount of undesirable constituents in exhaust gas from an engine being operated on gasoline containing a cyclopentadienyl manganese antiknock.
Inventors
- 👤 Leonard M. Niebylski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:33
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C10L1/00; C10L1/10; C10L1/14; C10L10/04; C10L10/06; C10L1/18; C10L1/19; C10L1/1905; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
63 words
A gasoline composition for a spark ignited internal combustion engine comprising i. an antiknock amount of a cyclopentadienyl manganese tricarbonyl antiknock, and ii. an amount effective to reduce the plugging of an exhaust gas catalyst of a compound having the general formula ##STR16## wherein R, R 1 , R 2 and R 3 are independently selected from hydrogen, hydrocarbyl and substituted hydrocarbyl radicals.
Claim 2
Dependent Claim
63 words
A gasoline composition for a spark ignited internal combustion engine comprising i. an antiknock amount of a cyclopentadienyl manganese tricarbonyl antiknock, and ii. an amount effective to reduce the plugging of an exhaust gas catalyst of a compound having the general formula ##STR16## wherein R, R 1 , R 2 and R 3 are independently selected from hydrogen, hydrocarbyl and substituted hydrocarbyl radicals.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein said cyclopentadienyl is a hydrocarbon group having from 5 to 17 carbon atoms.
Claim 4
Dependent Claim
10 words
The composition of claim 2 wherein said cyclopentadienyl is methylcyclopentadienyl.
Claim 5
Dependent Claim
31 words
The composition of claim 3 wherein R 1 , R 2 and R 3 are independently selected from hydrogen and hydrocarbyl radicals and wherein R is independently selected from hydrocarbyl radicals.
Claim 6
Dependent Claim
31 words
The composition of claim 4 wherein R 1 , R 2 and R 3 are independently selected from hydrogen and alkyl radicals and wherein R is independently selected from alkyl radicals.
Claim 7
Dependent Claim
13 words
The composition of claim 5 wherein said alkyl radicals are lower alkyl radicals.
Claim 8
Dependent Claim
42 words
An additive fluid composition for gasoline comprising i. a cyclopentadienyl manganese tricarbonyl antiknock, and ii. a compound having the general formula ##STR17## wherein R, R 1 , R 2 and R 3 are independently selected from hydrogen, hydrocarbyl, and substituted hydrocarbyl radicals.
Claim 9
Dependent Claim
42 words
An additive fluid composition for gasoline comprising i. a cyclopentadienyl manganese tricarbonyl antiknock, and ii. a compound having the general formula ##STR17## wherein R, R 1 , R 2 and R 3 are independently selected from hydrogen, hydrocarbyl, and substituted hydrocarbyl radicals.
Claim 10
Dependent Claim
18 words
The composition of claim 7 wherein said cyclopentadienyl is hydrocarbon group having from 5 to 17 carbon atoms.
Claim 11
Dependent Claim
10 words
The composition of claim 8 wherein said cyclopentadienyl is methylcyclopentadienyl.
Claim 12
Dependent Claim
31 words
The composition of claim 9 wherein R 1 ,, R 2 and R 3 are independently selected from hydrogen and hydrocarbyl radicals and wherein R is independently selected from hydrocarbyl radicals.
Claim 13
Dependent Claim
12 words
The composition of claim 10 wherein said hydrocarbyl radicals are alkyl radicals.
Claim 14
Dependent Claim
13 words
The composition of claim 11 wherein said alkyl radicals are lower alkyl radicals.
Claim 15
Dependent Claim
53 words
A gasoline composition for a spark ignited internal combustion engine comprising i. an antiknock amount of a cyclopentadienyl manganese tricarbonyl antiknock, and ii. an amount effective to reduce the plugging of an exhaust gas catalyst of a compound having the general formula ##STR18## wherein R is independently selected from hydrogen and hydrocarbyl radicals.
Claim 16
Dependent Claim
53 words
A gasoline composition for a spark ignited internal combustion engine comprising i. an antiknock amount of a cyclopentadienyl manganese tricarbonyl antiknock, and ii. an amount effective to reduce the plugging of an exhaust gas catalyst of a compound having the general formula ##STR18## wherein R is independently selected from hydrogen and hydrocarbyl radicals.
Claim 17
Dependent Claim
20 words
A gasoline composition of claim 13 wherein said cyclopentadienyl is a hydrocarbon group having from 5 to 17 carbon atoms.
Claim 18
Dependent Claim
10 words
The composition of claim 14 wherein said cyclopentadienyl is methylcyclopentadienyl.
Claim 19
Dependent Claim
13 words
The composition of claim 14 wherein R is independently selected from hydrocarbyl radicals.
Claim 20
Dependent Claim
12 words
The composition of claim 16 wherein said hydrocarbyl radicals are alkyl radicals.
Claim 21
Dependent Claim
13 words
The composition of claim 17 wherein said alkyl radicals are lower alkyl radicals.
Claim 22
Dependent Claim
10 words
The composition of claim 18 wherein each R is ethyl.
Claim 23
Dependent Claim
32 words
An additive fluid composition for gasoline comprising i. a cyclopentadienyl manganese tricarbonyl antiknock, and ii. a compound having the general formula ##STR19## wherein R is independently selected from hydrogen and hydrocarbyl radicals.
Claim 24
Dependent Claim
32 words
An additive fluid composition for gasoline comprising i. a cyclopentadienyl manganese tricarbonyl antiknock, and ii. a compound having the general formula ##STR19## wherein R is independently selected from hydrogen and hydrocarbyl radicals.
Claim 25
Dependent Claim
19 words
The composition of claim 20 wherein said cyclopentadienyl is a hydrocarbon group having from 5 to 17 carbon atoms.
Claim 26
Dependent Claim
10 words
The composition of claim 21 wherein said cyclopentadienyl is methylcyclopentadienyl.
Claim 27
Dependent Claim
13 words
The composition of claim 22 wherein R is independently selected from hydrocarbyl radicals.
Claim 28
Dependent Claim
12 words
The composition of claim 23 wherein said hydrocarbyl radicals are alkyl radicals.
Claim 29
Dependent Claim
13 words
The composition of claim 24 wherein said alkyl radicals are lower alkyl radicals.
Claim 30
Dependent Claim
10 words
The composition of claim 25 wherein each R is ethyl.
Claim 31
Dependent Claim
66 words
A low-lead or essentially lead-free gasoline composition for a spark ignited internal combustion engine comprising i. an amount effective to improve the antiknock properties of said gasoline composition of a cyclopentadienyl manganese tricarbonyl antiknock, and ii. an amount effective to reduce the plugging of an exhaust gas catalyst of a compound having the general formula ##STR20## wherein R is indpendently selected from hydrogen and hydrocarbyl radicals.
Claim 32
Dependent Claim
66 words
A low-lead or essentially lead-free gasoline composition for a spark ignited internal combustion engine comprising i. an amount effective to improve the antiknock properties of said gasoline composition of a cyclopentadienyl manganese tricarbonyl antiknock, and ii. an amount effective to reduce the plugging of an exhaust gas catalyst of a compound having the general formula ##STR20## wherein R is indpendently selected from hydrogen and hydrocarbyl radicals.
Claim 33
Dependent Claim
19 words
The composition of claim 27 wherein said cyclopentadienyl is a hydrocarbon group having from 5 to 17 carbon atoms.
Claim 34
Dependent Claim
10 words
The composition of claim 28 wherein said cyclopentadienyl is methylcyclopentadienyl.
Claim 35
Dependent Claim
14 words
The composition of claim 29 wherein R is independently selected from a hydrocarbyl radical.
Claim 36
Dependent Claim
13 words
The composition of claim 30 wherein said hydrocarbyl radical is an alkyl radical.
Claim 37
Dependent Claim
14 words
The composition of claim 31 wherein said alkyl radical is a lower alkyl radical.
Claim 38
Dependent Claim
10 words
The composition of claim 32 wherein each R is ethyl.
Claim 39
Dependent Claim
36 words
An additive fluid concentrate for lead-free or essentially lead-free gasoline comprising i. a cyclopentadienyl manganese tricarbonyl antiknock, and ii. a compound having the general formula ##STR21## wherein R is independently selected from hydrogen and hydrocarbyl radicals.
Claim 40
Dependent Claim
36 words
An additive fluid concentrate for lead-free or essentially lead-free gasoline comprising i. a cyclopentadienyl manganese tricarbonyl antiknock, and ii. a compound having the general formula ##STR21## wherein R is independently selected from hydrogen and hydrocarbyl radicals.
Claim 41
Dependent Claim
19 words
The concentrate of claim 34 wherein said cyclopentadienyl is a hydrocarbon group having from 5 to 17 carbon atoms.
Claim 42
Dependent Claim
10 words
The concentrate of claim 35 wherein said cyclopentadienyl is methylcyclopentadienyl.
Claim 43
Dependent Claim
13 words
The concentrate of claim 36 wherein R is independently selected from hydrocarbyl radicals.
Claim 44
Dependent Claim
12 words
The concentrate of claim 37 wherein said hydrocarbyl radicals are alkyl radicals.
Claim 45
Dependent Claim
13 words
The concentrate of claim 38 wherein said alkyl radicals are lower alkyl radicals.
Claim 46
Dependent Claim
10 words
The concentrate of claim 39 wherein each R is ethyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |